基于离散时间序列OD量的动态交通分配方法  

Dynamic Traffic Assignment Method Based on Discrete-Time Series OD Volume

作　　者：张文义[1] 孙会君[1] 吴中[2] 

机构地区：[1]北京交通大学城市交通复杂系统理论与技术教育部重点实验室,北京100044 [2]河海大学交通学院,南京210098

出　　处：《交通运输系统工程与信息》2010年第3期123-129,共7页Journal of Transportation Systems Engineering and Information Technology

基　　金：国家基础研究计划项目(2006CB705500);教育部全国优秀博士学位论文资助项目(200763);霍英东青年教师基金(111083);国家自然科学基金(70801005;70871009)

摘　　要：为了更确切地描述离散时间动态交通分配问题中各离散时段分配时的路网阻抗特性、更合理地反映各时段分配过程中出行者的出行行为,提出了一种基于消散周期OD量和差额OD量、分阶段分配的梯阶分配思想,它考虑了各离散时段分配前路网既有剩留交通量对后继离散时段OD用户出行选择的影响,更符合实际.通过融合相继平均法,设计了梯阶分配算法,并据此对数据结构做了适应性补充.示例路网下新算法与相继平均算法的数值模拟结果表明,新算法分配结果能够更为客观真实地反映现实交通中的动态现象,仿真度更高.最后给出了梯阶分配思想在现实中的应用.To exactly describe the impedance characteristic of transport network before each discrete-time assignment and reasonably reflect travelers＇ trip behavior during each discrete-time assignment in dynamic discrete-time traffic assignment,a two-sequential assignment idea is put forward based on the evanescible cycle and discrepancy OD volume and assignment gratingly.In which,the trip-choosing impact that the left traffic volume acts on the OD users of following interval before each discrete-time assignment is considered,and which matchs well with the reality.Then,a two-sequential approach with syncretizes MSA is designed.And some pertinence changes and additions in data structure are also made.The numerical simulation of road-network example between proposed algorithm and the MSA indicates that the assignment result of new algorithm can objectively and precisely reflect the dynamic transport phenomena with a more effective simulation degree.At the last section,the paper presents the application of the proposed method.

关 键 词：城市交通 动态交通分配 离散时间 用户均衡 梯阶分配 OD 

分 类 号：U491[交通运输工程—交通运输规划与管理]